It seems strange to drink less at one time. But our body will often "hurry" through fluids if you drink more than five ounces at a time. The body sense is to flush that water out and dump it. Smaller amounts within about 10 minutes are absorbed better. Sip. Relax. Pause. (What a concept!)
Good news for the imperfect!
Mild caffeine drinks and limited amounts of alcohol you are accustomed to can be hydrating. What is "mild caffeine"? That is green tea or fewer than four cups of coffee daily, preferably two. Alcoholic drinks can also be hydrating, although they more easily lead to dehydration! Especially favorable for your inner environment are drinks with mixers like fruit juice or water, or beer and wine. Limit two, if you would. And join me in reading labels; the tonic water now sold is most often full of high fructose corn syrup!
Hidden sodium can reverse the good effects of hydration. Many of us know that luncheon meats are high in sodium. Did you know that baked goods, soup and many sodas are very high in sodium?